Walter scott



(No Model.) 2 Sheets-Sheet 1.

W. SCOTT.

PRINTNG MACHINE.

No. 312,022. Patented Feb. 10, 1885.

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2 Sheets-@Sheet 2.

(No Model.)

W. `SCOTT.

PRINTING MACHINE.

Patented Peb.'10,1885.

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WALTER SCOTT, OF PLAINFIELD, NEW JERSEY.

PRINTING-MACHINE.

SPECIFICATION forming-part of Letters Patent No. 312,022, dated February 10, 1885.

Application filed Xovembcr 20, ISES.

To all whom, it may concern:

Be itknown that LWALTER Sco'rfnof Plaineld, in the county of Union and State of New Jersey, have invented an Improvement in Printing-Machines, of which the following is a specification.

This invention relates to that class of printing-presses in which the paper is supplied from awcb or roll and cut off into sheets, being carried through the press by tapes or belts and printed upon both sides, and delivered either to a folder or in any other convenient manner.

In my improvement the sheet is received by nippers upon an impression-cylinder and conveyed to the printing-cylinder, where it receives an impression upon one side, after which the sheet is delivered directly to the second impression-cylinder, and by it presented to the second printing-cylinders for printing the opposite side of the sheet, after which such sheet is taken away either by belts, or preferably by a delivery-cylinder and nippers,which pass such sheet off between belts to the folder or other place of delivery. In this mode of printing` it is necessary to perforate the paper at the place where one sheet is to be separated from the other, and the belts which convey the paper into the printing-press and the nipping-rollers are so arranged and speeded that the advancing endof the web of paper is seized and the sheet pulled-off by the accelerated motion, separation taking place upon the line of the punctures or perforations. The accelerated motion is sufficient for the impressioncylinder to make two revolutions to each sheet that is received, so that such impression-cylinder carries around the sheet and holds it while being imprinted by the types. It then passes around and delivers the sheet to the next impression cylinder, and upon the second rotation grasps the advancing end of the next sheet, and the operation is repeated.

In the drawings, Figure 1 is a vertical longitudinal section of the printing-press. Fig. 2 is a diagram illustrating the details of the gearing, cams, Cto. Fig. 3 is a side view of one of the cams, and Fig. 4 represents the axis and knuckle of the gripper.

I make use of two form-cylinders, A and A', the shafts of which are supported in suitable bearings in the frames Al. Each of these form- (No model.)

cylinders is provided with the necessary clamps for the reception of types, stereotypeplates, or other printing` devices-usually for thc recept-ion ofthe frame or turtle carrying the type. The types occupy from about one-third to nearly one-half of the circumference of the cylinder, the remainder being a plain inkingsurface. Beneath these form-cylinders are the impression-cylinders B and B, each one being` ofhalfthe diameter ofeither printing-cylinder. It is preferable to connect the shafts b and b by gear-wheels, as indicated by the dotted lines in Fig. 2, and to connect these gear-wheels, respectively, to gear-wlleels upon the shafts a5 cf of the respective forni-cylinders A and A. The power to rotate these shafts and gearwheels may be applied to either ofthe shafts in any convenient manner. Upon each of the impression-cylinders B and B there is agripper. These grippers are made in any ordinary ina-nner; but Iprefer and use ashaft carried by the cylinder, having upon it the gripping-fingers, and near one end of such shaft is a knuckle having prismatic faces or notches, and against which the end of the spring u presses, as indicated in Fig. 4, so that such spring` will hold the gripper either open or closed; This construction of the gripper -is well known.

At the end of the gripper-shaft is a crankarm, which, coming into contact with either of the cams hereinafter described, either opens or closes the gripper. The delivery-cylinder Gis of the same size as the cylinder B, and connected to the same by a gear to the gear-wheels upon the shaft b5, so that the said deliverycylinder C and impressioli-cylinder B rotate together, and this delivery-cylinder C is provided with a gripper, b", constructed as before described. The shafts b5 b are preferably mounted in journal-boxes or bearings that are adjustable in the frames A, in order thatv the imliiression-cylinders may bear with more or -less force against the printing-surfaces a and c', respectively, of the form-cylinders A A. Upon the shaft cdof the fornicylinder A is an eccentric or earn, j, the rod of which is connected to the leverJ, pivotedat 3 to the frame A3. This lever is provided with cams 4 and 5, which are' properly shaped to act against the crank-arms of the grippers b2 b upon the im- IOO pression-cylinders B B. The parts are placed and timed in such a manner that when the crank end of the gripper b2v passes between the cams 4 and 5, such gripper being closed to -carry the sheet to the printing operation, the cam 4 is out of the way and allows the gripper b2 to pass by without being opened. When the gripper passes by the second time, the cam j has moved the lever J in such a manner that its cam 4 is in the path of the crank end of the gripper, and opens such gripper at the same instant that cam 5 causes the gripper b3 of the impression-cylinder B to close and grasp the advancing end ofthe sheet, which at this time has been printed upon one side, and thereby transfer the sheet from the impression-cylinder B to the impression-cylinder B.

I make use of a stationary cam, I, upon the frame A3, which acts to close the gripper b2 and cause the same to grasp the advancing end of the sheet as it is delivered from the belts e and e', as hereinafter described.

, It will now be understood that the gripper b2 remains open from the time it has been opened by the cam 4 until it passes around to the cam I and closes upon the advancing end of the second sheet, and that said gripper b2 remains closed during the whole of one revolution and until it is opened by the cam 4 upon its second revolution and the sheet delivered as aforesaid.

'Ihe counter-shaft N is driven by bevel gear- Awheels R and R from the shaft a5, and upon this counter-shaft N is an eccentric or cam, 7c, the rod of which connects with the bent lever k3, and this gives motion to the cam-lever, K, pivoted at 8 upon the frame A3, and upon this lever K are the cams 9 and 10. The parts are shaped and the motions timed in such a manner that' the cam 9 opens the gripper b3 at the proper time for delivery of the sheet fromthe impression-cylinder B to the. delivery-cylin-` der C at lthe same instant theycam 10 on such lever K closes the gripper Z, causing the same toseize the advancing end of the sheet, which has now been printed upon both sides. The cam L is stationary, and acts to open the grippers b4 as the 4sheet is taken off by the belts next described. y

`The belt c passes around the delivery-cylinder C, beneath the roller 12, over the roller 13, and over the roller 14, and the belt c passes around the roller 16 and over the rollers 14 15. The printed sheet passes in between these belts@ and c, and is conveyed away to any suitable folding apparatus ordelivered in any desired manner. The roll of paper F is supported by a suitable shaft or spindle in bearings upon the frames A3, and the paper passes from such roll over the feed-rollerEand down between the same and the roller E. There are springs that act upon the journal-boxes of the roller E to cause the said roller E to press against the paper and grip the same against the roller E.

The cutting-cylinders D and D are geared together and to the feed-rollers E and E', as indicated by the dotted lines, Fig. 2. The cylinder D receives motion from the counter-shaft N and beveled gear-wheels Rl and R3. kUpon the cylinder D is a knife or cutter of any suitrIhe feed-belts e are passed around the rollers f and f, and the same are tightened by roller f6. The feed-belts e are passed around the rollers f, f2, and f4 and beneath the tightener'c. The rollers f and f are adjacent to each other, and the distance between them and the cutting-cylinders D and D is greater than the length of the sheet that is to be printed upon.

The surface-speed .of the cutting-rollers D D isabout one-half of the surface-speed of the rollersff; hence,wheu the advancing end of the sheet of paper reaches the roller-sf andf, it is gripped by the tapes e e and its speed accelerated, so that the back end of the sheet is separated fromthe web at the line of perforation or puncture,and the advancing end ofthe sheet is carried down beneath the 'guards or fingers 20. and the parts are timed in such a manner that the said advancing end of the sheet is grasped by the grippers b2, and said grippers b2 move at the same speed as the rollersff and belts @and e; hence the paper is passed to the impression-cylinder B in a proper manner, and by it the said paper is carried around and receives one impression from the types a upon the form-cylinder A, as aforesaid.

I will now describe the apparatus for supplying and distributing the ink. Above these cylinders A and A is the ink-distributing cylinder G, and over this are the ink-working roll- ICO IlO

nary yielding composition. The roller g is by preference an iron roller, and the composition rollers h and h2, called the doctor-rollers,7 intervene between the ink-tables b and b', re-

spectively, of the cylinders A A and the inkdistributing cylinder G and roller g, and to these doctor-rollers h and h2 lateral movement is given at the proper time by levers h5 and h, acted upon by the cams l? and Pon the counter-shaft N.

The parts are constructed and timed in such a manner that the doctor-roller h is in contact with the ink-distributing cylinder G while the types a are passing adjacent thereto, after which the cam P moves the said doctor-roller sidewise and brings it into contact with the ink-distributing surface b of the cylinder A, and said cam P moves this doctor-roller h away from the surface b before the types a reach the said doctor-roller 7i. So, also, the doctor-rollerh2 is moved into contact with the ink-distributing surface b during the proper portion of the revolution of the cylinder A,

and it is moved into contact with the roller g iai `during the time that the types c' are passing by the said roller h2.

It is preferable to communicate to the inkdistributing cylinder G an endwise movement to more perfectly distribute the ink. For this purpose Iemploy a rockshaft, o,with the cranlarm 02 acting upon a collar upon the shaft o5 of the cylinder G, and uponthis rock-shaft ois a se ond crank-arm, o3, acted upon by the gro oved cam M, (see Fig. 3,) the groove in said cam being at an inclination, so as to communicate through the rock shaft 0 and arms o2 and o an endwise movementto the shaft 05. The inkfountain H is provided with a fountain-roller, H', and this fountain-roller is moved progress ively by a ratchet-lever and rod, i2, receiving motion from a cam, 38, upon the shaft t3. Said cam is preferably made as part of the cam M. (See Fig. 3.)4 By this means the fountainroller is rotated progressively to supply ink to the doctorroller 7i, which, by means of a lever, hand cams 2, is moved alternately into contact with the ink distributing` cylinder G and the fountain-roller H'.

The inlring-rollers s s s are upon frames S, supported in bearings and adapted to be moved in and out, and by the action of cams upon the shaft a6 the rollers s s s are allowed tol rest upon the inkingsurface b of the cylinder A, while the same is passing adjacent thereto; but these cams move the frames S outwardly, so that the inking rollers s s s may be in a proper position for the printing'suriace c to pass beneath and in contact with such rollers s s s. Y

The rollers s' s' s are similarly actuatedthat is to say, the cams on the shaft a" move such rollers Yout into the proper position for the printing-surface a a' to pass in contact with such inking-rollers, and said cams allow the inkingrollers to be in contact with the inkingsurfaee b' while the same is traveling adjacent to such rollers. rIlie cam M receives motion from a gearwheel upon the shaft a, acting upon a gear-wheel upon the shaft is, as

' indicated by the dotted lines in Fig. 2.

1t is preferable to make use of adjustable boxes for the shaft ofthe cutting-cylinder D', in order that the same may be raised or lowered to accommodate cuttingcylinders D and D' of different diameters, and these cutting' cylinders become the measure of the length of the paper supplied into the press; hence differentsizes of sheets can be printed in the saine press by simply changing the sizes of the cutting-cylinders D and D. The diameter of the impressioncylinders B and B' is greater than the diameter of the cutting-cylinders D and D', hence there will always be room upon the said impression cylinders B and B' for the largest size of sheet to which the press is adapted.

by a set-screw, as seen in Fig. 2, so that each doctor may be adjusted more or less closely into contact with the surface toward which such doctor-roller is pressed by its cam. By this means shrinkagein the composition roller or wear on the journals or cams is compensated.

It the impression-cylinders B B' were each made one-third of the diameter of the cylinder A or A', then the grippers mustbe opened and closed every three revolutions.

lf a feed-board is used in place of thetapes c c', then the sheets may be fed in by hand.

I claim as my invention as follows:

l. The combination. in a printing-press, of the cutting-cylinders D and D', the feed-tapes e and c', the rollers fand f', the impressioncylinders B and B', the grippers b2 and b3, and the forni-cylinders A and A', having printing and ink-distributing surfaces, and placed side by side above the impression-cylinders B B', substantially as set forth.

2. The combination, with the form-cylinders A and A', having printing and ink-distributing surfaces and placed side by side, of the impressiori-cylinders B and B'and their grippers below the cylinders A A', the delivery-cylinder C, grippers b4, receiving the sheet fromthe cylinder B', and the tapes c and c', for conveying the sheet from the cylin der C, substantially as set forth.

8. The combination, with the form-cylinders A A', having printing and ink-distribue ing surfaces, of the impressioncylinders B and B' and the grippers b2 and b5, the lever J cams 4 and 5, andan eccentric, j, for actuating the gri ppers b2 and b every second revolution of the cylinders B and B', substantially as set forth.

4. The combination, with the cylinders A and A', having printing and ink-distributing surfaces, of the ink-distributing cylinder G, rollers r/ g', around the same, the fountain roller H', doctor h, cam 2, and connections from the said cam to the doctor for moving the same into contact with the ink-distributing cylinder G and fountain-roller, respectively, and the doctor-rollers it' h2, for transferring ink from the cylinder G and roller g' ICO to the ink-distributing surfaces on the cylinders A A', respectively, and the inking-rollers .s ands', substantially as and for the purposes set forth.

5. The form-cylinders A A', having printing and inlrdistributing surfaces, and one inkfountain and the distributing and inlring rollers, in combination with two impression-cylinders and grippers for transferring the paper and printing it on both sides, substantially as specified.

Signed by me this 12th day of November, A. D. 1883.

' V ALTER SCOTT. Vitnesses:

Gno. T. PINCKNEY, VILLIAM G. Mo'rT. 

